On 16 January 2015 at 11:54, Marcus Shawcroft
marcus.shawcr...@gmail.com wrote:
On 15 January 2015 at 18:18, Richard Henderson r...@redhat.com wrote:
On 12/15/2014 12:41 AM, Zhenqiang Chen wrote:
+(define_expand cmpmode
+ [(set (match_operand 0 cc_register )
+(match_operator:CC 1
On Sun, Jan 18, 2015 at 11:58 AM, Christophe Lyon
christophe.l...@linaro.org wrote:
On 16 January 2015 at 11:54, Marcus Shawcroft
marcus.shawcr...@gmail.com wrote:
On 15 January 2015 at 18:18, Richard Henderson r...@redhat.com wrote:
On 12/15/2014 12:41 AM, Zhenqiang Chen wrote:
On 18 January 2015 at 21:22, Andrew Pinski pins...@gmail.com wrote:
On Sun, Jan 18, 2015 at 11:58 AM, Christophe Lyon
christophe.l...@linaro.org wrote:
On 16 January 2015 at 11:54, Marcus Shawcroft
marcus.shawcr...@gmail.com wrote:
On 15 January 2015 at 18:18, Richard Henderson
On 15 January 2015 at 18:18, Richard Henderson r...@redhat.com wrote:
On 12/15/2014 12:41 AM, Zhenqiang Chen wrote:
+(define_expand cmpmode
+ [(set (match_operand 0 cc_register )
+(match_operator:CC 1 aarch64_comparison_operator
+ [(match_operand:GPI 2 register_operand )
+
On 12/15/2014 12:41 AM, Zhenqiang Chen wrote:
+(define_expand cmpmode
+ [(set (match_operand 0 cc_register )
+(match_operator:CC 1 aarch64_comparison_operator
+ [(match_operand:GPI 2 register_operand )
+ (match_operand:GPI 3 aarch64_plus_operand )]))]
+
+
+
On 15/12/14 08:41, Zhenqiang Chen wrote:
-Original Message-
From: Richard Henderson [mailto:r...@redhat.com]
Sent: Saturday, December 13, 2014 3:26 AM
To: Zhenqiang Chen
Cc: Marcus Shawcroft; gcc-patches@gcc.gnu.org
Subject: Re: [PATCH, AARCH64] Fix ICE in CCMP (PR64015
-Original Message-
From: Richard Henderson [mailto:r...@redhat.com]
Sent: Saturday, December 13, 2014 3:26 AM
To: Zhenqiang Chen
Cc: Marcus Shawcroft; gcc-patches@gcc.gnu.org
Subject: Re: [PATCH, AARCH64] Fix ICE in CCMP (PR64015)
- tree lhs = gimple_assign_lhs (g
- tree lhs = gimple_assign_lhs (g);
enum machine_mode mode = TYPE_MODE (TREE_TYPE (lhs));
rtx target = gen_reg_rtx (mode);
+
+ start_sequence ();
tmp = emit_cstore (target, icode, NE, cc_mode, cc_mode,
0, tmp, const0_rtx, 1,
-Original Message-
From: Richard Henderson [mailto:r...@redhat.com]
Sent: Tuesday, November 25, 2014 5:25 PM
To: Zhenqiang Chen
Cc: Marcus Shawcroft; gcc-patches@gcc.gnu.org
Subject: Re: [PATCH, AARCH64] Fix ICE in CCMP (PR64015)
On 11/25/2014 09:41 AM, Zhenqiang Chen wrote:
I
On 11/26/2014 10:23 AM, Zhenqiang Chen wrote:
/* Check to make sure CC is not clobbered since prepare_operand might
generates copy or mode convertion insns, although no test shows
such insns clobber CC. */
And what do you do if a clobber does happen?
With TER enabled, there's
-Original Message-
From: Richard Henderson [mailto:r...@redhat.com]
Sent: Tuesday, November 25, 2014 5:25 PM
To: Zhenqiang Chen
Cc: Marcus Shawcroft; gcc-patches@gcc.gnu.org
Subject: Re: [PATCH, AARCH64] Fix ICE in CCMP (PR64015)
On 11/25/2014 09:41 AM, Zhenqiang Chen wrote:
I
-Original Message-
From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
ow...@gcc.gnu.org] On Behalf Of Richard Henderson
Sent: Monday, November 24, 2014 4:57 PM
To: Zhenqiang Chen; gcc-patches@gcc.gnu.org
Cc: Marcus Shawcroft
Subject: Re: [PATCH, AARCH64] Fix ICE in CCMP
On 11/25/2014 09:41 AM, Zhenqiang Chen wrote:
I want to confirm with you two things before I rework it.
(1) expand_insn needs an optab_handler as input. Do I need to define a
ccmp_optab with different mode support in optabs.def?
No, look again: expand_insn needs an enum insn_code as input.
On 11/24/2014 06:11 AM, Zhenqiang Chen wrote:
Expand pass always uses sign-extend to represent constant value. For the
case in the patch, a 8-bit unsigned value 252 is represented as -4,
which pass the ccmn check. After mode conversion, -4 becomes 252, which
leads to mismatch.
This sort of
Hi,
Expand pass always uses sign-extend to represent constant value. For the
case in the patch, a 8-bit unsigned value 252 is represented as -4,
which pass the ccmn check. After mode conversion, -4 becomes 252, which
leads to mismatch.
The patch adds another operand check after mode conversion.
On Sun, Nov 23, 2014 at 9:11 PM, Zhenqiang Chen zhenqiang.c...@arm.com wrote:
Hi,
Expand pass always uses sign-extend to represent constant value. For the
case in the patch, a 8-bit unsigned value 252 is represented as -4,
which pass the ccmn check. After mode conversion, -4 becomes 252,
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